题目

下列运算结果等于1的是 （ ） A . －2+1 B . －12 C . －（－1） D . －|－1| 答案：C(   ) 1. [2015 • 南京]—Why didn't Peter        his homework?―He said he had lost his workbook. I think it's an excuse.   A. does   B. doing   C. do   D. did